Having a birthday party? Someone turning "40" ? These black 40 Whirls are a great hanging decoration for the party. Comes in a pack of 72 basic whirls measuring 17-1/2 inches long also some are 32 inches long with the number "40" dangling gives an extra 1/2 inch in length. They come completely assembled and easy to hang with attached plastic hook. Be sure to view our full selection of bulk birthday party supplies.